Question
Mention the IUPAC rule used to write the formulas of mononuclear coordination compounds.
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Answer
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Answer the following questions: Describe the preparation of potassium permanganate from pyrolusite ore. Write balanced chemical equation for one reaction to show the oxidizing nature of potassium permanganate.
Explain the acidic property of carboxylic acid and dicuss the effect of substituents on their acidity.
With the help of an example explain what is meant by pseudo first order reaction.
Using Valence bond theory, explain the following in relation to the paramagnetic complex $[Mn(CN)_6]^{3-}$
$a.$ type of hybridisation
$b.$ magnetic moment value
$c.$ type of complex $-$ inner, outer orbital complex
→$a.$ type of hybridisation
$b.$ magnetic moment value
$c.$ type of complex $-$ inner, outer orbital complex
Match the terms given in Column $I$ with the units given in Column $II.$
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Column $I$
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Column $II$
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| $i.$ | $∧_m$ | $a.$ | $\ce{S cm^{-1}}$ |
| $ii.$ | $\ce{E}_{\ce{Cell}}$ | $b.$ | $m^-$ |
| $iii.$ | $K$ | $c.$ | $\ce{S cm^2 mol^{-1}}$ |
| $iv.$ | $G^*$ | $d.$ | $V$ |
$(a).$ Out of formic acid and acetic acid, which one will give the $\text{HVZ}$ reaction? Give a suitable reason in support of your answer and write the chemical reaction involved.
$(b)$. Alcohols are acidic but they are weaker acids than water. Arrange various isomers of butanol in the increasing order of their acidic nature. Give a reason for the same.
$(c).$ An organic compound $A$ which is a Grignard reagent is used to obtain $2-$methylbutan$-2-ol$ on reaction with a carbonyl compound $'B\ '.$ Identify $A\ '$ and $'B\ '.$ Write the equation for the reaction between $A$ and $B.$
→$(b)$. Alcohols are acidic but they are weaker acids than water. Arrange various isomers of butanol in the increasing order of their acidic nature. Give a reason for the same.
$(c).$ An organic compound $A$ which is a Grignard reagent is used to obtain $2-$methylbutan$-2-ol$ on reaction with a carbonyl compound $'B\ '.$ Identify $A\ '$ and $'B\ '.$ Write the equation for the reaction between $A$ and $B.$
Derive the equation required for finding the activation energy.
Write the structure of A, B, C, D and E in the following reactions:
- Write the steps involved in the preparation of:
- $K_2Cr_2O_7$ from $Na_2CrO_{4.}$
- $KMnO_4$ from $K_2MnO_{4.}$
- Calomel from corrosive sublimate.
- What is meant by lanthanoid contraction? What effect does it have on the chemistry of the elements which follow lanthanoids?
Explain the following terms:
(i) Coagulation
(ii) Electrophoresis
(iii) Tyndall Effect
(iv) Hardy Schulze's Rule
(i) Coagulation
(ii) Electrophoresis
(iii) Tyndall Effect
(iv) Hardy Schulze's Rule